US 12,103,892 B2
Biocarbon compositions with optimized compositional parameters, and processes for producing the same
James A. Mennell, Brighton, UT (US); Dustin Slack, Gwinn, MI (US); and Daren Daugaard, Newburg, MO (US)
Assigned to Carbon Technology Holdings, LLC, Oakdale, MN (US)
Filed by Carbon Technology Holdings, LLC, Oakdale, MN (US)
Filed on Nov. 8, 2022, as Appl. No. 17/982,697.
Claims priority of provisional application 63/278,573, filed on Nov. 12, 2021.
Prior Publication US 2023/0151280 A1, May 18, 2023
Int. Cl. C04B 14/28 (2006.01); C04B 28/04 (2006.01); C10B 53/00 (2006.01); C10B 57/06 (2006.01); C10G 1/00 (2006.01); C10G 1/04 (2006.01); C22B 1/24 (2006.01); C22B 1/244 (2006.01)
CPC C04B 14/28 (2013.01) [C04B 28/04 (2013.01); C10B 53/00 (2013.01); C10B 57/06 (2013.01); C10G 1/00 (2013.01); C10G 1/002 (2013.01); C10G 1/042 (2013.01); C22B 1/2406 (2013.01); C22B 1/244 (2013.01); C10G 2300/1011 (2013.01); C10G 2300/205 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A process for producing a biocarbon composition with an optimized base-acid ratio, the process comprising:
(a) providing a starting feedstock comprising biomass, wherein the starting feedstock is optionally dried;
(b) pyrolyzing the starting feedstock to generate an intermediate biocarbon stream and a pyrolysis vapor, wherein the intermediate biocarbon stream is characterized by a base-acid ratio defined by the following formula:

OG Complex Work Unit Math
wherein each of the Fe2O3, CaO, MgO, K2O, Na2O, SiO2, Al2O3, and TiO2 correspond to weight percentages pursuant to ASTM D4326;
(c) washing or treating the intermediate biocarbon stream with an acid, a base, a salt, a metal, H2, H2O, CO, CO2, or a combination thereof, to adjust the base-acid ratio; and/or introducing an additive during step (a) or step (b), to adjust the base-acid ratio; and
(d) recovering a biocarbon composition comprising from about 50 wt % to about 99 wt % total carbon, wherein the total carbon is at least 50% renewable as determined from a measurement of the 14C/12C isotopic ratio of the total carbon, and wherein the base-acid ratio of the biocarbon composition is selected from about 0.1 to about 10;
wherein step (c) utilizes acidic water that is obtained from step (a), step (b), or another process step that is conducted prior to step (c).